CN108160739A - A kind of deformed steel processing method - Google Patents
A kind of deformed steel processing method Download PDFInfo
- Publication number
- CN108160739A CN108160739A CN201711463434.5A CN201711463434A CN108160739A CN 108160739 A CN108160739 A CN 108160739A CN 201711463434 A CN201711463434 A CN 201711463434A CN 108160739 A CN108160739 A CN 108160739A
- Authority
- CN
- China
- Prior art keywords
- hot
- steel
- steel billet
- deformed steel
- deformed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/098—Z-sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/001—Heat treatment of ferrous alloys containing Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Geometry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a kind of deformed steel processing methods, it is characterised in that：Include the following steps：S1：Steel billet is placed in heating furnace, is heated to 1050~1200 DEG C, and keep 30~60min；S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression；S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming；S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel.The particularly special-shaped steel billet of the method selection of the present invention is as raw material, control through rational procedure of processing and effectively the conditions such as working process parameter, the precision of deformed steel converted products and the intensity of enhancing deformed steel converted products can be effectively improved, and the comprehensive performances such as good corrosion-resistant, low temperature resistant, antifatigue destruction of guarantee, and need to only provide for simple replacement of mold can be suitable for a variety of deformed steels processing, ensure high lumber recovery simultaneously, reduce unnecessary loss, it is cost-effective.
Description
Technical field
The invention of this reality is related to profile shapes manufacture field, and in particular to a kind of deformed steel processing method.
Background technology
Shaped steel is one of steel four major varieties (type, line, plate, pipe), is a kind of widely used steel.According to section shape
Shape, shaped steel divide simple shape and complicated or special-shaped section shaped steel (deformed steel).The former the characteristics of was its cross section periphery
It does tangent line and does not meet among section generally in upper arbitrary point.Such as：Square steel, round steel, band steel, angle steel, hexagonal steel etc..Deformed steel is complicated
With the abbreviation of special-shaped section shaped steel, belong to one kind of shaped steel, and be different from the call of simple shape.Such as, " king " word central sill
Steel, " C " shaped steel, " E " shaped steel, " F " shaped steel, " Z " shaped steel, " RG " shaped steel, " SQ " shaped steel etc..
The particularity and unicity that deformed steel is used by it, it is often higher than simple shape to the requirement of precision, this
Just there is higher requirement to the ability of equipment.Since its section configuration is complicated, especially many dedicated deformed steels in specific occasion,
Even seldom there is experience that can use for reference, so that hole type design and the difficulty of production are even more far above simple shape.Therefore
The production cost of deformed steel is higher than simple shape.Deformed steel is all much certain a line because its shape size difference is very big
Industry or specific occasion are dedicated, so the market demand of single variety is not often very big.So deformed steel production system
Scale it is often also and not very big.
With the continuous improvement of China's industrialized level in recent years, China's production rolled section steel it is horizontal than last century
It is remarkably enhanced.State more and more is done step-by-step concerning the shaped steel of national economy such as large H-shaped steel, high ferro heavy rail etc.
Productionization in addition some have also achieved international most advanced level.But simultaneously it has been found that a lot of middle-size and small-size deformed steels production
In research and development, the level of the deformed steel manufacturer in China is compared with the producer of European a lot of countries or has very big poor evidence.
Particularly in the treatment of details of the control of dimensional accuracy and section configuration, their level is also much not achieved in a lot of products.
State Intellectual Property Office discloses a Publication No. CN1223320A in 1999.07.21, and entitled " bridge is stretched
The invention of contracting seam device Special deformed steel hot rolling technology ", a kind of bridge expansion joint installation Special deformed steel heat of the disclosure of the invention
Roll process, that is, first by steel billet in heating furnace heat to 1150~1200 DEG C, subsequently into be sequentially provided on hot roll K9~K1 or
Carry out hot-roll forming in the hot-rolling mill of the special passes of K7~K1, hot rolling finishing temperature is more than 850 DEG C, enter back on hot bending roller according to
Sequence is provided in the hot-bending machine of the special passes of J3~J1 further hot bending sizing, and hot bending temperature is controlled at 500~1000 DEG C.The hair
Bright hot rolling hot bending once lumber-preserving is not required to be machined and weld, and process costs are low, and for lumber recovery up to more than 85%, product working face is smart
It spends error and is less than 0.2mm, be suitble to industrialization large-scale production.But the product lumber recovery that is obtained of the hot rolling technology of the invention and
The comprehensive performance such as precision and intensity is all to be improved, right to meet current Important Project, such as bridge, rail traffic
The precision and intensity requirement of deformed steel, and the deformed steel type that can be processed of the technique is relatively limited.
State Intellectual Property Office discloses a Publication No. CN102215989A in 2011.10.12, entitled " T-shaped
The invention of the manufacturing method of steel and rolling equipment group ", a kind of manufacturing method of T-steel of the disclosure of the invention, including：In roll work
Sequence, web and the edge of a wing of the rolling dumming for the T-steel base of T-shape；And finishing rolling step, into being about to by rolling process in described
The T-steel base of acquisition is formed as the finish rolling of finished form, and rolling process in described includes：It is carried out by the first thick universal rolling machine
Rolling process, wherein, the entire surface of the top and bottom on the plate thickness direction of upper and lower horizontal roll pressure web；Flanging process, pressure
The end face of lower flange；And the rolling process carried out by the second thick universal rolling machine, wherein, use the width and target of roll crown
Web inside dimensions are equal and the corner of web front end side be processed to not roll web surface shape upper and lower level
Roll depresses the top and bottom in the plate thickness direction in addition to front end other than around of web, and the side in the perpendicular roll of left and right makes
Its periphery with horizontal roll contacts and is depressed along the short transverse of web the end face of web, and the opposing party presses along the plate thickness direction on the edge of a wing
Lower flange.But the method that the invention is recorded is only applicable to T-steel, and without the precision and intensity of open T-steel converted products
Specific data.
Therefore, in this context, a kind of precision for effectively improving deformed steel converted products is provided and enhancing is special-shaped
The intensity of steel converted products, and need to only provide for simple replacement of mold can be suitable for a variety of deformed steels processing, while ensure it is high into
Material rate, reduces unnecessary loss, and cost-effective deformed steel processing method is very urgent.
Invention content
The purpose of the present invention is to provide a kind of deformed steel processing method, this method selects special special-shaped steel billet as former
Material controls through rational procedure of processing and effectively the conditions such as working process parameter, can effectively improve deformed steel converted products
Precision and enhancing deformed steel converted products intensity, and need to only provide for simple replacement of mold can be suitable for a variety of deformed steels processing,
Ensure high lumber recovery simultaneously, reduce unnecessary loss, it is cost-effective.
The present invention is achieved through the following technical solutions：
A kind of deformed steel processing method, includes the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1050~1200 DEG C, and keep 30~60min；
Inventor has found：First steel billet is put and is heated to 1050~1200 DEG C, steel billet can be easily deformed, it is easy to process, and energy
Ensure that steel billet structure is microcosmic and macrostructure does not change；30~60min is kept, is conducive to steel billet thermally equivalent, ensures it
Each component part is almost without the temperature difference.
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keep the temperature of entire compression process
It it is 1150~1250 DEG C, compression strain rate is 0.01~0.15/s, obtains hot compression steel billet；
Due to that steel billet temperature can be caused further to increase in hot compression engineering, and temperature can influence compression effectiveness and compression effect
Rate, if temperature is relatively low, compression strain rate just needs accordingly to turn down, and otherwise easilys lead to steel billet compression damage, therefore, it is necessary to control
Make its temperature range.Inventor has found：The temperature for keeping entire compression process is 1150~1250 DEG C, and compression strain rate is
0.01~0.15/s can guarantee good compression effectiveness and compression efficiency, and the medium factor of steel billet stress collection is avoided to cause to compress
Damage improves compression lumber recovery.After hot compression, hot compression steel billet structure more packed uniform, and microstructure such as crystallizes
Form etc., it is more regular, the intensity of material is improved, is conducive to obtain the special-shaped steel product of high intensity.
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and
The temperature for keeping entire hot-roll forming process is 950~1150 DEG C, and it is special that 11~α of α 1 are sequentially provided on the hot roll of the hot-rolling mill
Different pass；The shape of 11~α of special pass α 1 on the hot roll changes according to the difference of deformed steel final shape；It is described
Hot-roll forming deflection during hot-roll forming accounts for the 80%~95% of total deformation；
Since during hot-roll forming, temperature is very big to hot rolling deformation rate and influential effect, therefore, suitable temperature is selected
Hot-roll forming range is particularly significant.Inventor has found：The temperature for keeping entire hot-roll forming process is 950~1150 DEG C, is both held
Easily rolling, and can guarantee the microstructure of steel billet, such as crystal habit, it is not destroyed.
The hot roll is exactly hot rolling mold, in order to produce joist steel in " king " word, " C " shaped steel, " E " shaped steel, " F " type
The different deformed steels such as steel, " Z " shaped steel, " RG " shaped steel, " SQ " shaped steel, need to open up corresponding graded junction on hot roll
Structure, i.e., be sequentially provided with 11~α of α, 1 special passes, the shape of 11~α of special pass α 1 on the hot roll according to deformed steel most
The difference of end form shape and change, need to only provide for simple replacement of mold in this way can be suitable for the processing of a variety of deformed steels, while ensure height
Lumber recovery, reduce unnecessary loss, it is cost-effective.
Total deformation mentioned here refers to the sum of deflection of hot-roll forming and hot bending type-approval process.Inventor also sends out
It is existing：Hot-roll forming deflection during hot-roll forming accounts for the 80%~95% of total deformation, be conducive to one-pass molding in place and
Ensure the precision of shaped article.
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and
The temperature for keeping entire hot bending type-approval process is 750~950 DEG C, and it is special to be sequentially provided with 3~β of β 1 on the hot bending roller of the hot-bending machine
Pass；The shape of special pass J3~J1 on the hot bending roller changes according to the difference of deformed steel final shape.
Since in hot bending type-approval process, temperature is very big to hot bending rate of deformation and influential effect, therefore, selection is suitable
Temperature hot-roll forming range is particularly significant.Inventor has found：The temperature for keeping entire hot bending type-approval process is 850~950 DEG C, both
Ensure hot bending fixed effect, improve machining accuracy, and can guarantee the microstructure of steel billet, such as crystal habit, be not destroyed.
The hot roll is exactly hot rolling mold, in order to produce joist steel in " king " word, " C " shaped steel, " E " shaped steel, " F " type
The different deformed steels such as steel, " Z " shaped steel, " RG " shaped steel, " SQ " shaped steel, need to open up corresponding graded junction on hot bending roller
Structure is sequentially provided with 3~β of β, 1 special passes；The shape of special pass J3~J1 on the hot bending roller is final according to deformed steel
The difference of shape and change, need to only provide for simple replacement of mold in this way can be suitable for the processing of a variety of deformed steels, while ensure high
Lumber recovery reduces unnecessary loss, cost-effective.
The deformed steel processing method of the present invention controls suitable fabrication process condition using above-mentioned Continuous maching step, energy one
The secondary a variety of deformed steels of molding effectively improve the precision of deformed steel converted products and the intensity of enhancing deformed steel converted products, and only
Mold, which need to be provided for simple replacement of, can be suitable for the processing of a variety of deformed steels, while ensure high lumber recovery, reduce unnecessary loss,
It is cost-effective.
Steel billet of the present invention is steel billet commonly used in the art, as a preferred embodiment, the steel billet and the hot pressing
Contracting steel is square steel.In this way convenient for compression process, and be conducive to save raw material.
As a preferred embodiment, the area of section of the hot compression steel is 70% of the steel billet area of section before compressing
~80%.Inventor has found：Using the compressive deformation of this range, compression effectiveness is good, advantageously ensures that the performance of final products,
And be conducive to improve the utilization rate of raw material.For example the square steel that cross section is 120x120mm is compressed to 90x90mm, hot compression
The area of section of steel is 75% of the steel billet area of section before compressing.
Steel billet chemical composition of the present invention is steel billet chemical composition commonly used in the art, as a kind of preferred side
Case, the weight percent of the steel billet chemical composition are：C：0.15~0.25%, N：0.002~0.009%, Si：0.35~
0.55%th, Mn：0.4~1%, P：0.01~0.02%, Ce：0.008~0.015%, B：0.001~0.002%, Ni：0.2~
0.6%th, Nb：0.022%~0.35%, Ti：0.005~0.03%, Nb+Ti：0.023~0.036%, As：≤ 0.009%,
Cu：≤ 0.02%, As+Cu：≤ 0.025%, surplus is Fe and inevitable impurity.Since steel billet chemical composition can influence steel
The deformation nature of base, it is in close relations with the processing method of the present invention, especially at hot press method, quenching treatment and tempering
Reason, and determine the performance of final products, therefore, inventor has found by a large number of experiments：Steel billet with above-mentioned chemical composition,
Processing method through the present invention is processed, obtained very high and corrosion-resistant, low temperature resistant, the antifatigue destruction of product strength and precision
Etc. comprehensive performances it is good, be applicable to broader use environment and higher requirement.
As a kind of more preferable scheme, the weight percent of following compositions is：C：0.18~0.22%, N：0.002~
0.007%th, Ce：0.01~0.013%, Ni：0.35~0.5%, Nb：0.05%~0.28%, Ti：0.015~0.022%,
Nb+Ti：0.025~0.035%, As：≤ 0.008%, Cu：≤ 0.016%, As+Cu：≤ 0.022%.
As a preferred embodiment, following steps are further included：
S5：The deformed steel obtained through step S4 is subjected to quenching treatment；Specially the deformed steel obtained through step S3 is heated to
860~950 DEG C, and after keeping 60min, carry out water quenching.Inventor has found by repetition test：Using above-mentioned quenching technical, both
The intensity of special-shaped steel product can be improved, and can guarantee its enough elongation, is used so as to improve the comprehensive of special-shaped steel product
Performance.
As a preferred embodiment, following steps are further included：
S6：Deformed steel after step S5 quenching treatments is subjected to temper, temperature is 600 DEG C~650 DEG C, during tempering
Between be 120min.Inventor has found by repetition test：Using above-mentioned temper, the elongation of special-shaped steel product can be both improved
Rate, and can guarantee its enough intensity, so as to improve the synthesis performance of special-shaped steel product.
As a preferred embodiment, the quantity of 11~α of special pass α 1 on the hot roll is according to the power of hot-rolling mill
Select 6~11.It can guarantee that course of hot rolling is preferably completed in this way, advantageously ensure that the performance requirement of special-shaped steel product.
As a preferred embodiment, the quantity of 3~β of special pass β 1 on the hot bending roller is selected according to the power of hot-bending machine
With 2~4.It can guarantee that hot bending process is preferably completed in this way, advantageously ensure that the performance requirement of special-shaped steel product.
As a preferred embodiment, the hot-roll forming selects 2~3 three rollers or duo mill.The size of its diameter and
Quantity can according to needed for product pass number and the size of milling train power and select.It can guarantee that course of hot rolling is preferably complete in this way
Into advantageously ensuring that the performance requirement of special-shaped steel product.
As a preferred embodiment, the hot bending unit of 1~3 three-high mill or duo mill is selected in the hot bending sizing.
Its size and number pass number and can roll stool watt level and select according to needed for product.It can guarantee that hot bending process is more preferable in this way
Ground is completed, and advantageously ensures that the performance requirement of special-shaped steel product.
As a kind of more preferable scheme, the hot-roll forming deflection during the hot-roll forming accounts for（Hot-roll forming and heat
Curved sizing）The 85%~90% of total deformation.It is more advantageous to one-pass molding so in place and ensures the precision of shaped article.
As a preferred embodiment, the linear velocity of hot bending roller is 0.4~1.5 meter per second in the hot bending type-approval process.In this way
Be conducive to the final shaping of deformed steel and ensure the shape need of fine structure, better ensure that the processing essence of special-shaped steel product
Degree.
Compared with prior art, the present invention haing the following advantages and advantageous effect：
The particularly special-shaped steel billet of the method selection of the present invention is as raw material, and through rational procedure of processing and work is processed in effectively control
The conditions such as skill parameter can effectively improve the precision of deformed steel converted products and the intensity of enhancing deformed steel converted products, Yi Jiliang
Good guarantee is corrosion-resistant, low temperature resistant, antifatigue the comprehensive performances such as to destroy, and need to only provide for simple replacement of mold can be suitable for it is a variety of different
The processing of shaped steel, while ensure high lumber recovery, unnecessary loss is reduced, it is cost-effective.
Description of the drawings
Fig. 1 is the method processing step flow chart of the present invention；
Fig. 2 is that the method for the present invention processes the mold system structure diagram of C-type steel.
Wherein, the mold in turn number on K4~K1 thermocompressors；For 7~α of α 1 be special pass on hot roll sequentially
Number；3~β of β 1 are that the special pass on hot bending roller is sequentially numbered.
Specific embodiment
The present invention is described in further detail, but the implementation of the present invention is not limited to this with reference to embodiment.
Deformed steel test method of the present invention has：
1. yield strength uses GB/T228.1-2010 methods, 17 DEG C of test temperature.
2. tensile strength uses GB/T228.1-2010 methods, 17 DEG C of test temperature.
3. elongation uses GB/T228.1-2010 methods, 17 DEG C of test temperature.
4. impact test is provided using GB/T229-2007,0 DEG C of test temperature.
5. working face unevenness：For the unevenness in calibration operation face, to pass through a diagonal of working face and parallel
It is ideal plane in another cornerwise plane A0, maximum deviation and minimum respectively obtains ideal plane A0 by cautious with working face
Deviation obtains unevenness of the algebraic step as working face, is accurate to 0.01mm.
6. lumber recovery=steel billet number/qualification deformed steel number * 100%.
Embodiment 1：
A kind of deformed steel processing method, includes the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1050~1200 DEG C, and keep 30~60min；
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keeps the temperature of entire compression process to be
1150~1250 DEG C, compression strain rate is 0.01~0.15/s, obtains hot compression steel billet；
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and keep
The temperature of entire hot-roll forming process is 950~1150 DEG C, and 11~α of α, 1 special holes are sequentially provided on the hot roll of the hot-rolling mill
Type；The shape of 11~α of special pass α 1 on the hot roll changes according to the difference of deformed steel final shape；The hot rolling
Hot-roll forming deflection in forming process accounts for the 80%~95% of total deformation；
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and keep
The temperature of entire hot bending type-approval process is 850~950 DEG C, and 3~β of β, 1 special holes are sequentially provided on the hot bending roller of the hot-bending machine
Type；The shape of 3~β of special pass β 1 on the hot bending roller changes according to the difference of deformed steel final shape.
Embodiment 2：
A kind of deformed steel processing method, includes the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1100~1200 DEG C, and keep 30min；
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keeps the temperature of entire compression process to be
1160~1250 DEG C, compression strain rate is 0.05~0.15/s, obtains hot compression steel billet；
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and keep
The temperature of entire hot-roll forming process is 950~1100 DEG C, and 11~α of α, 1 special holes are sequentially provided on the hot roll of the hot-rolling mill
Type；The shape of 11~α of special pass α 1 on the hot roll is set according to the gradual change of C-type steel final shape；The hot-roll forming
Hot-roll forming deflection in the process accounts for the 85% of total deformation；
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and keep
The temperature of entire hot bending type-approval process is 850~900 DEG C, and 3~β of β, 1 special holes are sequentially provided on the hot bending roller of the hot-bending machine
Type；The shape of 3~β of special pass β 1 on the hot bending roller is set according to the gradual change of C-type steel final shape.
The steel billet and the hot compression steel are square steel；The area of section of the hot compression steel is the steel billet before compression
The 75% of area of section.
The weight percent of the steel billet chemical composition is：C：0.22%th, N：0.007%th, Si：0.35、Mn：0.9%th, P：
0.01%th, Ce：0.008、B：0.001%th, Ni：0..35%, Nb：0.005%th, Ti：0.022%th, As：≤ 0.008%, Cu：≤
0.016%th, As+Cu：≤ 0.022%, surplus is Fe and inevitable impurity.
The quantity of 11~α of special pass α 1 on the hot roll selects 7 according to the power of hot-rolling mill；The hot bending roller
On 3~β of special pass β 1 quantity according to the power of hot-bending machine select 3.
The hot-roll forming selects 2 500 three-high mills of diameter and a duo mill；The hot bending sizing selects 3
The hot bending unit of 350 duo mill of diameter.
The linear velocity of hot bending roller is 1 meter per second in the hot bending type-approval process.
Embodiment 3：
A kind of deformed steel processing method, includes the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1100~1200 DEG C, and keep 30min；
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keeps the temperature of entire compression process to be
1160~1250 DEG C, compression strain rate is 0.05~0.15/s, obtains hot compression steel billet；
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and keep
The temperature of entire hot-roll forming process is 950~1100 DEG C, and 11~α of α, 1 special holes are sequentially provided on the hot roll of the hot-rolling mill
Type；The shape of 11~α of special pass α 1 on the hot roll is set according to the gradual change of F shaped steel final shapes；The hot-roll forming
Hot-roll forming deflection in the process accounts for the 85% of total deformation；
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and keep
The temperature of entire hot bending type-approval process is 850~900 DEG C, and 3~β of β, 1 special holes are sequentially provided on the hot bending roller of the hot-bending machine
Type；The shape of 3~β of special pass β 1 on the hot bending roller is set according to the gradual change of F shaped steel final shapes.
The steel billet and the hot compression steel are square steel；The area of section of the hot compression steel is the steel billet before compression
The 75% of area of section.
The weight percent of the steel billet chemical composition is：C：0.22%th, N：0.007%th, Si：0.35、Mn：0.9%th, P：
0.01%th, Ce：0.008、B：0.001%th, Ni：0..35%, Nb：0.005%th, Ti：0.022%th, As：≤ 0.008%, Cu：≤
0.016%th, As+Cu：≤ 0.022%, surplus is Fe and inevitable impurity.
The quantity of 11~α of special pass α 1 on the hot roll selects 7 according to the power of hot-rolling mill；The hot bending roller
On 3~β of special pass β 1 quantity according to the power of hot-bending machine select 3.
The hot-roll forming selects 2 500 three-high mills of diameter and a duo mill；The hot bending sizing selects 3
The hot bending unit of 350 duo mill of diameter.
The linear velocity of hot bending roller is 1 meter per second in the hot bending type-approval process.
Embodiment 4：
A kind of deformed steel processing method, includes the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1100~1200 DEG C, and keep 30min；
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keeps the temperature of entire compression process to be
1160~1250 DEG C, compression strain rate is 0.05~0.15/s, obtains hot compression steel billet；
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and keep
The temperature of entire hot-roll forming process is 950~1100 DEG C, and 11~α of α, 1 special holes are sequentially provided on the hot roll of the hot-rolling mill
Type；The shape of 11~α of special pass α 1 on the hot roll is set according to the gradual change of RG shaped steel final shapes；The hot-roll forming
Hot-roll forming deflection in the process accounts for the 85% of total deformation；
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and keep
The temperature of entire hot bending type-approval process is 850~900 DEG C, and 3~β of β, 1 special holes are sequentially provided on the hot bending roller of the hot-bending machine
Type；The shape of 3~β of special pass β 1 on the hot bending roller is set according to the gradual change of RG shaped steel final shapes.
The steel billet and the hot compression steel are square steel；The area of section of the hot compression steel is the steel billet before compression
The 75% of area of section.
The weight percent of the steel billet chemical composition is：C：0.22%th, N：0.007%th, Si：0.35、Mn：0.9%th, P：
0.01%th, Ce：0.008、B：0.001%th, Ni：0..35%, Nb：0.005%th, Ti：0.022%th, As：≤ 0.008%, Cu：≤
0.016%th, As+Cu：≤ 0.022%, surplus is Fe and inevitable impurity.
The quantity of 11~α of special pass α 1 on the hot roll selects 7 according to the power of hot-rolling mill；The hot bending roller
On 3~β of special pass β 1 quantity according to the power of hot-bending machine select 3.
The hot-roll forming selects 2 500 three-high mills of diameter and a duo mill；The hot bending sizing selects 3
The hot bending unit of 350 duo mill of diameter.
The linear velocity of hot bending roller is 1 meter per second in the hot bending type-approval process.
The performance test results of 4 product of the embodiment of the present invention 2, embodiment 3 and embodiment are as shown in table 1：
The performance test results of 1 embodiment 2 of table, 4 product of embodiment 3 and embodiment
It can be seen from Table 1 that C-type steel, yield strength, the tension of F shaped steel and RG shaped steel that method of the invention is processed are strong
The performances such as degree, elongation and ballistic work are good, and lumber recovery is high, and precision is high（Working face unevenness is small）.
Embodiment 5：
A kind of deformed steel processing method, includes the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1050~1150 DEG C, and keep 60min；
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keeps the temperature of entire compression process to be
1150~1250 DEG C, compression strain rate is 0.02~0.15/s, obtains hot compression steel billet；
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and keep
The temperature of entire hot-roll forming process is 1000~1150 DEG C, and it is special to be sequentially provided with 11~α of α 1 on the hot roll of the hot-rolling mill
Pass；The shape of 11~α of special pass α 1 on the hot roll is set according to the gradual change of Z-shape steel final shape；It is described to be rolled into
Hot-roll forming deflection during type accounts for the 90% of total deformation；
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and keep
The temperature of entire hot bending type-approval process is 900~950 DEG C, and 3~β of β, 1 special holes are sequentially provided on the hot bending roller of the hot-bending machine
Type；The shape of 3~β of special pass β 1 on the hot bending roller is set according to the gradual change of Z-shape steel final shape.
The steel billet and the hot compression steel are square steel；The area of section of the hot compression steel is the steel billet before compression
The 75% of area of section.
The weight percent of the steel billet chemical composition is：C：0.2%th, N：0.006%th, Si：0.45%th, Mn：0.8%th,
P：0.015%th, Ce：0.0012%th, B：0.0015%th, Ni：0.4%th, Nb：0.028%th, Ti：0.015%th, As：≤ 0.009%,
Cu：≤ 0.02%, As+Cu：≤ 0.025%, surplus is Fe and inevitable impurity.
The quantity of 11~α of special pass α 1 on the hot roll selects 11 according to the power of hot-rolling mill；The hot bending
The quantity of 3~β of special pass β 1 on roller selects 4 according to the power of hot-bending machine.
The hot-roll forming selects 3 500 three-high mills of diameter；2 350 2 rollings of diameter are selected in the hot bending sizing
The hot bending unit of machine and 1 three-high mill.
The linear velocity of hot bending roller is 0.4 meter per second in the hot bending type-approval process.
Embodiment 6：
A kind of deformed steel processing method, includes the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1050~1150 DEG C, and keep 60min；
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keeps the temperature of entire compression process to be
1150~1250 DEG C, compression strain rate is 0.02~0.15/s, obtains hot compression steel billet；
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and keep
The temperature of entire hot-roll forming process is 1000~1150 DEG C, and it is special to be sequentially provided with 11~α of α 1 on the hot roll of the hot-rolling mill
Pass；The shape of 11~α of special pass α 1 on the hot roll is set according to the gradual change of E shaped steel final shapes；It is described to be rolled into
Hot-roll forming deflection during type accounts for the 90% of total deformation；
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and keep
The temperature of entire hot bending type-approval process is 900~950 DEG C, and 3~β of β, 1 special holes are sequentially provided on the hot bending roller of the hot-bending machine
Type；The shape of 3~β of special pass β 1 on the hot bending roller is set according to the gradual change of E shaped steel final shapes.
The steel billet and the hot compression steel are square steel；The area of section of the hot compression steel is the steel billet before compression
The 75% of area of section.
The weight percent of the steel billet chemical composition is：C：0.2%th, N：0.006%th, Si：0.45%th, Mn：0.8%th,
P：0.015%th, Ce：0.0012%th, B：0.0015%th, Ni：0.4%th, Nb：0.028%th, Ti：0.015%th, As：≤ 0.009%,
Cu：≤ 0.02%, As+Cu：≤ 0.025%, surplus is Fe and inevitable impurity.
The quantity of 11~α of special pass α 1 on the hot roll selects 11 according to the power of hot-rolling mill；The hot bending
The quantity of 3~β of special pass β 1 on roller selects 4 according to the power of hot-bending machine.
The hot-roll forming selects 3 500 three-high mills of diameter；2 350 2 rollings of diameter are selected in the hot bending sizing
The hot bending unit of machine and 1 three-high mill.
The linear velocity of hot bending roller is 0.4 meter per second in the hot bending type-approval process.
Embodiment 7：
A kind of deformed steel processing method, includes the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1050~1150 DEG C, and keep 60min；
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keeps the temperature of entire compression process to be
1150~1250 DEG C, compression strain rate is 0.02~0.15/s, obtains hot compression steel billet；
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and keep
The temperature of entire hot-roll forming process is 1000~1150 DEG C, and it is special to be sequentially provided with 11~α of α 1 on the hot roll of the hot-rolling mill
Pass；The shape of 11~α of special pass α 1 on the hot roll is set according to the gradual change of SQ shaped steel final shapes；It is described to be rolled into
Hot-roll forming deflection during type accounts for the 90% of total deformation；
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and keep
The temperature of entire hot bending type-approval process is 900~950 DEG C, and 3~β of β, 1 special holes are sequentially provided on the hot bending roller of the hot-bending machine
Type；The shape of 3~β of special pass β 1 on the hot bending roller is set according to the gradual change of SQ shaped steel final shapes.
The steel billet and the hot compression steel are square steel；The area of section of the hot compression steel is the steel billet before compression
The 75% of area of section.
The weight percent of the steel billet chemical composition is：C：0.2%th, N：0.006%th, Si：0.45%th, Mn：0.8%th,
P：0.015%th, Ce：0.0012%th, B：0.0015%th, Ni：0.4%th, Nb：0.028%th, Ti：0.015%th, As：≤ 0.009%,
Cu：≤ 0.02%, As+Cu：≤ 0.025%, surplus is Fe and inevitable impurity.
The quantity of 11~α of special pass α 1 on the hot roll selects 11 according to the power of hot-rolling mill；The hot bending
The quantity of 3~β of special pass β 1 on roller selects 4 according to the power of hot-bending machine.
The hot-roll forming selects 3 500 three-high mills of diameter；2 350 2 rollings of diameter are selected in the hot bending sizing
The hot bending unit of machine and 1 three-high mill.
The linear velocity of hot bending roller is 0.4 meter per second in the hot bending type-approval process.
The performance test results of 7 product of the embodiment of the present invention 5, embodiment 6 and embodiment are as shown in table 2：
The performance test results of 2 embodiment 5 of table, 7 product of embodiment 6 and embodiment
It can be seen from Table 2 that the Z-shape steel processed of method of the invention, yield strength, the tension of E shaped steel and SQ shaped steel are strong
The performances such as degree, elongation and ballistic work are good, and lumber recovery is high, and precision is high（Working face unevenness is small）.
Embodiment 8：
On the basis of embodiment 2, more preferably：
S5：The deformed steel obtained through step S4 is subjected to quenching treatment；Specially the deformed steel obtained through step S3 is heated to
900 DEG C, and after keeping 60min, carry out water quenching.
Embodiment 9：
On the basis of embodiment 2, more preferably：
S6：Deformed steel after step S5 quenching treatments is subjected to temper, temperature is 600 DEG C, and tempering time is
120min。
Embodiment 10：
On the basis of embodiment 8, more preferably：
S6：Deformed steel after step S5 quenching treatments is subjected to temper, temperature 600, tempering time is
120min。
The mechanical experimental results of the embodiment of the present invention 2, embodiment 8 and embodiment 9 are as shown in table 3：
Yield strength, tensile strength and the elongation of 3 embodiment 2 of table, 9 product of embodiment 8 and embodiment
It can be seen from Table 3 that yield strength and tensile strength have after the quenched processing of C-type steel that method of the invention is processed
It is improved, elongation is declined；Yield strength and tensile strength are declined after tempered processing, and elongation increases.
The above is only presently preferred embodiments of the present invention, and limitation in any form is not done to the present invention, every according to this
Any simple modification that the technical spirit of invention makees above example, equivalent variations, each fall within protection scope of the present invention
Within.
Claims (10)
1. a kind of deformed steel processing method, it is characterised in that：Include the following steps：
S1：Steel billet is placed in heating furnace, is heated to 1050~1200 DEG C, and keep 30~60min；
S2：Steel billet after step S1 is heated is sent into compressor and carries out hot compression, and keeps the temperature of entire compression process to be
1150~1250 DEG C, compression strain rate is 0.01~0.15/s, obtains hot compression steel billet；
S3：The hot compression steel billet that step S1 is obtained is sent into hot-rolling mill and carries out hot-roll forming, obtains hot rolling abnormal shape steel billet, and keep
The temperature of entire hot-roll forming process is 950~1150 DEG C, and 11~α of α, 1 special holes are sequentially provided on the hot roll of the hot-rolling mill
Type；The shape of 11~α of special pass α 1 on the hot roll changes according to the difference of deformed steel final shape；The hot rolling
Hot-roll forming deflection in forming process accounts for the 80%~95% of total deformation；
S4：The hot rolling abnormal shape steel billet that will be obtained through step S2 is sent into hot-bending machine and carries out hot bending sizing, obtains deformed steel, and keep
The temperature of entire hot bending type-approval process is 850~950 DEG C, and 3~β of β, 1 special holes are sequentially provided on the hot bending roller of the hot-bending machine
Type；The shape of 3~β of special pass β 1 on the hot bending roller changes according to the difference of deformed steel final shape.
2. deformed steel processing method according to claim 1, it is characterised in that：The steel billet and the hot compression steel are
Square steel；The area of section of the hot compression steel is 70%~80% of the steel billet area of section before compressing.
3. deformed steel processing method according to claim 1 or 2, it is characterised in that：The weight of the steel billet chemical composition
Percentage is：C：0.15~0.25%, N：0.002~0.009%, Si：0.35~0.55%, Mn：0.4~1%, P：0.01~
0.02%th, Ce：0.008~0.015%, B：0.001~0.002%, Ni：0.2~0.6%, Nb：0.022%~0.35%,
Ti：0.005~0.03%, Nb+Ti：0.023~0.036%, As：≤ 0.009%, Cu：≤ 0.02%, As+Cu：≤
0.025%th, surplus is Fe and inevitable impurity.
4. deformed steel processing method according to claim 3, it is characterised in that：The weight percent of following compositions is：C：
0.18~0.22%, N：0.002~0.007%, Ce：0.01~0.013%, Ni：0.35~0.5%, Nb：0.05%~
0.28%th, Ti：0.015~0.022%, Nb+Ti：0.025~0.035%, As：≤ 0.008%, Cu：≤ 0.016%, As+
Cu：≤ 0.022%.
5. deformed steel processing method according to claim 1, it is characterised in that：Further include following steps：
S5：The deformed steel obtained through step S4 is subjected to quenching treatment；Specially the deformed steel obtained through step S3 is heated to
860~950 DEG C, and after keeping 60min, carry out water quenching.
6. deformed steel processing method according to claim 1, it is characterised in that：Further include following steps：
S6：Deformed steel after step S5 quenching treatments is subjected to temper, temperature is 600 DEG C~650 DEG C, during tempering
Between be 120min.
7. deformed steel processing method according to claim 1, it is characterised in that：Special pass α 11 on the hot roll
The quantity of~α 1 selects 6~11 according to the power of hot-rolling mill；The quantity of 3~β of special pass β 1 on the hot bending roller according to
The power of hot-bending machine selects 2~4.
8. deformed steel processing method according to claim 1, it is characterised in that：The hot-roll forming selects 2~3 three rollers
Or duo mill；The hot bending unit of 1~3 three-high mill or duo mill is selected in the hot bending sizing.
9. deformed steel processing method according to claim 1, it is characterised in that：Being rolled into during the hot-roll forming
Type deflection accounts for the 85%~90% of total deformation.
10. deformed steel processing method according to claim 1, it is characterised in that：Hot bending roller in the hot bending type-approval process
Linear velocity be 0.4~1.5 meter per second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463434.5A CN108160739B (en) | 2017-12-28 | 2017-12-28 | A kind of deformed steel processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463434.5A CN108160739B (en) | 2017-12-28 | 2017-12-28 | A kind of deformed steel processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108160739A true CN108160739A (en) | 2018-06-15 |
| CN108160739B CN108160739B (en) | 2019-06-07 |
Family
ID=62519696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711463434.5A Expired - Fee Related CN108160739B (en) | 2017-12-28 | 2017-12-28 | A kind of deformed steel processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108160739B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142292A (en) * | 2019-05-09 | 2019-08-20 | 山东钢铁股份有限公司 | The milling method and its rolling system of closed type fashioned iron |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082104A (en) * | 2006-05-30 | 2007-12-05 | 宝山钢铁股份有限公司 | Nickel-free micro-alloy low-temperature pressure vessel steel and manufacturing method thereof |
| CN101214494A (en) * | 2007-12-29 | 2008-07-09 | 莱芜钢铁集团有限公司 | Technique for rolling figured steel for magnetic suspension train rail |
| CN103938075A (en) * | 2014-04-04 | 2014-07-23 | 北京国网富达科技发展有限责任公司 | Preparation method of high-toughness Q420 grade hot-rolled equal angle steel for iron tower |
| CN103938063A (en) * | 2014-04-04 | 2014-07-23 | 北京国网富达科技发展有限责任公司 | Preparation method of high-toughness Q345 grade hot-rolled equal angle steel for iron tower |
| CN106062231A (en) * | 2014-03-07 | 2016-10-26 | 新日铁住金株式会社 | Medium-/high-carbon steel sheet and method for manufacturing same |
-
2017
- 2017-12-28 CN CN201711463434.5A patent/CN108160739B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082104A (en) * | 2006-05-30 | 2007-12-05 | 宝山钢铁股份有限公司 | Nickel-free micro-alloy low-temperature pressure vessel steel and manufacturing method thereof |
| CN101214494A (en) * | 2007-12-29 | 2008-07-09 | 莱芜钢铁集团有限公司 | Technique for rolling figured steel for magnetic suspension train rail |
| CN106062231A (en) * | 2014-03-07 | 2016-10-26 | 新日铁住金株式会社 | Medium-/high-carbon steel sheet and method for manufacturing same |
| CN103938075A (en) * | 2014-04-04 | 2014-07-23 | 北京国网富达科技发展有限责任公司 | Preparation method of high-toughness Q420 grade hot-rolled equal angle steel for iron tower |
| CN103938063A (en) * | 2014-04-04 | 2014-07-23 | 北京国网富达科技发展有限责任公司 | Preparation method of high-toughness Q345 grade hot-rolled equal angle steel for iron tower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142292A (en) * | 2019-05-09 | 2019-08-20 | 山东钢铁股份有限公司 | The milling method and its rolling system of closed type fashioned iron |
| CN110142292B (en) * | 2019-05-09 | 2024-04-30 | 山东钢铁股份有限公司 | Rolling method and rolling system of closed section steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108160739B (en) | 2019-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103465027B (en) | The thin brilliant dish base manufacture method of a kind of GH4169 alloy | |
| CN111360066B (en) | Low-cost, less-red-rust, high-strength and anti-seismic deformed steel bar production method and system | |
| CN106475420B (en) | A kind of board-shape control method based on the setting of cold-strip steel target flatness | |
| CN106636747B (en) | A kind of manufacturing method using heavy and medium plate mill double annealing production technical pure titanium plate | |
| CN112570449B (en) | Efficient double-rack double-shear-line straight-through medium plate production line and production method | |
| CN101912886A (en) | Optimizing method for controlling side part to be thinned | |
| CN104759892A (en) | Channel section steel production system and production method thereof | |
| CN103316916A (en) | Square tube former and production method of square tubes | |
| CN103978030A (en) | Production process device for rebar with ribs at three sides | |
| CN108067501A (en) | Suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature | |
| CN105624382A (en) | Hot-rolling method for V-Ti microalloyed steel | |
| CN108620434A (en) | A kind of X-shaped steel hot rolling molding process method | |
| CN110076207B (en) | Production method for reducing folding incidence of edge of wide plate | |
| CN115354222A (en) | Thick-specification high-strength weather-resistant anti-seismic H-shaped steel and rolling method thereof | |
| CN108160739B (en) | A kind of deformed steel processing method | |
| CN110180892B (en) | Production method of titanium steel composite board | |
| CN114433638A (en) | Method for controlling transverse unevenness of hot-rolled steel plate with thickness specification of less than or equal to 50mm | |
| CN113600611A (en) | Method for improving hot rolling flatness of bar and controlling bending | |
| CN112090960A (en) | Method for producing 400-500 MPa high-strength anti-seismic deformed steel bar by non-heating low-temperature slitting rolling | |
| CN208357553U (en) | The on-line continuous hot bending shape system and production line of hot plate/band | |
| CN203817045U (en) | Production technological arrangement for screw-thread steel bar with three ribbed sides | |
| CN101618499B (en) | Method for eliminating seaming coarse grains of rolling vane | |
| CN203408983U (en) | Square tube squaring machine | |
| CN216655854U (en) | Unequal-width straightening roller set for high-strength H-shaped steel | |
| WO2021239163A1 (en) | H-beam flexible rolling rough-rolling pass system and rolling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 Termination date: 20211228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |